you can be more confident in yourbility to beeady. and ththe same cialis is the ot approved to treat ed and symptoms of bp li needingo go frequently or urgently. tell your doctor about all your medical conditions and medications, and ask if your heart is healthy enoughor sexual activity. do not take cialis if u take nitrates for chest pain, as this may cause an unsafe drop in blood pssure. do not drink alcohol in excess with cialis. side effects may include headache, upset stomach, delayed backache or muscle ae. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours. if you have any sudden decrease or loss in hearing or vision, or if you have any allergic reactions such arash, hives, swelling of the lips, tongue or throat, or difficulty breathing or swallowin stop taking cialis and get medical help right away. k your doctor about cialis for dailuse and a 30-tablet free trial.